<template>
<div class="app-container">
<!--表单-->
<el-form :inline="true" class="demo-form-inline">
<el-form-item>
<el-input v-model="searchObj.hosname" placeholder="点击输入医院名称"/>
</el-form-item>

<el-form-item>
<el-date-picker
v-model="searchObj.reserveDateBegin"
type="date"
placeholder="选择开始日期"
value-format="yyyy-MM-dd"/>
</el-form-item>
<el-form-item>
<el-date-picker
v-model="searchObj.reserveDateEnd"
type="date"
placeholder="选择截止日期"
value-format="yyyy-MM-dd"/>
</el-form-item>
<el-button
:disabled="btnDisabled"
type="primary"
icon="el-icon-search"
@click="showChart()">查询</el-button>
</el-form>

<div class="chart-container">
<div id="chart" ref="chart" 
class="chart" style="height:500px;width:100%"/>
</div>
</div>
</template>

<script>
import echarts from 'echarts'
import statisticsApi from '@/api/statistics/orderStatistics'

export default {

data() {
return {
searchObj: {
hosname: '',
reserveDateBegin: '',
reserveDateEnd: ''
},
btnDisabled: false,
chart: null,
title: '',
xData: [], // x轴数据
yData: [] // y轴数据
}
},

methods: {
// 初始化图表数据
showChart() {
statisticsApi.getCountMap(this.searchObj).then(response => {
this.yData = response.data.countList
this.xData = response.data.dateList
this.setChartData()
})
},

setChartData() {
// 基于准备好的dom，初始化echarts实例
var myChart = echarts.init(document.getElementById('chart'))
// 指定图表的配置项和数据
var option = {
title: {
text: this.title + '挂号量统计'
},
tooltip: {},
legend: {
data: [this.title]
},
xAxis: {
data: this.xData
},
yAxis: {
minInterval: 1
},
series: [{
name: this.title,
type: 'line',
data: this.yData
}]
}

// 使用刚指定的配置项和数据显示图表。
myChart.setOption(option)
},
}
}
</script>